Download and install eReader to use as your eBook reader.
Download the eReader version of an eBook (perhaps Frankenstein?).
Move the eBook to your PocketPC: copy Frankenstein.pdb and paste it in your Active Sync folder, then sync your PocketPC with your desktop.
(To store a book on your flash card instead of in main memory, create
a folder on your card with path My Documents/Peanut Press and move the .pdb file there using the File Explorer function New Folder).
When you launch eReader on your PocketPC you'll find Frankenstein ready to read!